Csx Heavy Haul Services Q355 And Q650

I have the GP40 loco pack for CSX Heavy Haul, I have complete all the Scenarios and 22 of the 24 services.
Service Q355 and Q640 stall at 1.2% grades. Either both engines are actually pulling or a third is need. You can tell from the start of scenario, there is not enough power. I opend a ticket, respond..post it on the forum, we don't see anything. Anyone else have or sovle this issue? Thanks!!

Did you setup trailing on the second loco? It's not setup by default so you are only using the first loco.

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I ran the GP38-2-YN2 version of the service (Heavy Haul CSX Q355) last night just fine. The settings for the Trail and Lead used in the GP40-2 YN2 version of the service are identical and the consist is the same. For services Q355 and Q640, the GP40-2 stall at 1.5% grades. Very strange, since I was able to complete 22 of the 24 services for the GP40-2.